52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor:
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* Jeroen Bakker
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* Monique Dewanchand
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*/
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#include "COM_MixSubtractOperation.h"
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MixSubtractOperation::MixSubtractOperation() : MixBaseOperation()
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{
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/* pass */
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}
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void MixSubtractOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
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{
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float inputColor1[4];
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float inputColor2[4];
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float inputValue[4];
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this->m_inputValueOperation->read(inputValue, x, y, sampler);
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this->m_inputColor1Operation->read(inputColor1, x, y, sampler);
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this->m_inputColor2Operation->read(inputColor2, x, y, sampler);
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float value = inputValue[0];
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if (this->useValueAlphaMultiply()) {
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value *= inputColor2[3];
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}
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output[0] = inputColor1[0] - value * (inputColor2[0]);
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output[1] = inputColor1[1] - value * (inputColor2[1]);
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output[2] = inputColor1[2] - value * (inputColor2[2]);
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output[3] = inputColor1[3];
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clampIfNeeded(output);
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}
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